This paper describes a PC based computer program, NSYSDES (new system design), that will rate a vehicle cooling module including up to five fluid to air components, a fan with shroud and vehicle ram air. It is intended for use by sales and applications engineers who need quick yet reliable ratings of proposed systems to respond to a sales quotation. Given complete package and component geometry specifications, component dimensionless surface friction and heat transfer characteristics and inlet conditions, this program will yield outlet temperatures and system air side pressure drop as primary results. Stressed are user entries and program options rather than in-depth technical descriptions.